US PATENT SUBCLASS 84 / 736
.~.~.~.~ Filtering

Current as of: June, 1999
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84 /   HD   MUSIC

1  DF  INSTRUMENTS {9}
600  DF  .~ Electrical musical tone generation {5}
723  DF  .~.~ Transducers {9}
735  DF  .~.~.~ Tone synthesis or timbre control {1}
736.~.~.~.~ Filtering

DEFINITION

Classification: 84/736

Filtering:

(under subclass 735) Subject matter wherein a desired waveform is obtained by removing one or more partials or harmonics.

SEE OR SEARCH THIS CLASS, SUBCLASS:

661, for filtering with digital combinational circuit.

699+, for filtering with electric analog oscillators.

SEE OR SEARCH CLASS

327, Miscellaneous Active Electrical on linear Devices, Circuits, and Systems,

311, for transient limiting utilizing a filter and subclasses 552+ for unwanted signal suppression with an active filter. 330, Amplifiers,

303, for filters included or in conjunction with an amplifier.

333, Wave Transmission Lines and Networks,

167+, for lumped parameter filters; subclass 165 for frequency or time domain filters and delay lines; subclass 166 for time domain filters.

708, Electrical Computers: Arithmetic Processing and Calculating,

300+, for digital filters.